Plastic pollution. It’s one of the great environmental plights our ailing planet currently faces, and one which doesn’t seem to be going away any time soon. Plastic pollution in the ocean, in particular, is a worryingly growing reality and one which throws up a raft of problems in terms of how to be rid of it.

And while the leaders of the world squabble over Brexit, trade tariffs and the pending threat of a post-WWIII nuclear holocaust, one company has decided it was time for some real action. Literal action. Sexy action.

That’s right, Canadian smut juggernaut Pornhub has launched a new push to end plastic pollution in the ocean. The campaign, which is titled “Dirtiest Porn Ever”, sees two of the website’s most beloved performers–couple Leolulu–making whoopee on a filthy beach.

Sadly, things are a bit boring at the start of the video, with views of the kinky couple obstructed by the piles of rubbish that surround them. As cleaners go to work on the grubby stretch of sand, however, audiences are treated to more and more of the scene, with the happy ending of a clean beach revealing all to viewers who can stick it out to the end.

And if you think it’s just a funny stunt, think again: each time someone does watch the video in its entirety, Pornhub will make a donation to Ocean Polymers, a nonprofit that has developed a solution to collect and process plastic waste in the world’s ocean and seas.

This isn’t the first time the prurient purveyors of pornography have used their platform as a source of good in the world. The platform, which includes philanthropic arm Pornhub Cares, has previously committed to making their content more accessible to those living with a disability, offered scholarships to graduates working in a field with an altruistic bent, and committed to saving bees, amongst other things.

The Dirtiest Porn Ever campaign is now active–click the link below to see Leolulu save the world’s waterways together.